Valve operating mechanism



July'27, 1937. 5 Mi UL I JR 2,088,174

VALVE OPERATING MECHANISM Fiid 0st. 9, 1934 2 Sheets-Sheet 1 A TTORNEY July 27, 1937.

VALVE OPERATING MECHANISM Fiied Oct. 9, 1934 2 Sheets-Sheet 2 lllllllrlillilzrl rlll Ijlllllllllllll IIIIIIIIIlII/IIlIII/IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIlIlIIII/llIl/IllIIIIIIIlIIIIlIIII/IIIIIIIIIl/I/IIIIIIIIIIIIIIIII E. M. PAULLIN. JR 88,174-

EMPaullin INVENTOR A TTORNEY cludes a valve structure I.

Patented July 27, 1937 UNITED STATES 2,088,1ild

PATENT OFFlCE" VALVE OPERATING MECHANISM Edward M. Panllin, Jr... Buffalo, N. Y.;, assignor to Worthington Pump and Machinery Corporation, New York, N. Y., a corporation oi. Virginia Application October 9, 1934, Serial No. 747,528 I 1 Claim. (Cl. 175-=372) This invention relates to valve operating mechanisms and an object of the present invention is to provide an electromagnet valve operating mechanism embodying means for creating a time interval between the energizing oi the electromagnet and the operation of the valve.

With these and other objects in view as may appear from the accompanying specification, the

tures forming the invention will be specifically pointed out in the claims.

In the drawings:

Fig. l is a side elevation of the improved valve mechanism a portion being broken away.

Fig. 2 is a vertical section through the valve operating mechanism taken on the line 2-2 of Fig. i.

Fig. 3 is a fragmentary view showing a section taken centrally through the valve on a plane corresponding to the plane in which Fig. l is shown.

Referring more particularly' to the drawings, the improved valve operating mechanism in- The valve structure I comprises a casing 2 having the valve seat 3 formed therein against which a valve cone 4 is adapted to seat to cut off communication between the passages 5 and 6 of the valve casing 2. The valve cone 4 is urged against the seat by a spring I which is confined between the cone 4 and the removable retaining plug 8. A stem 9 is formed on the valve cone 4 and projects upwardly through the casing 2, having its upward end engaged by the plunger 10. The plunger I0 is slidable in the valve casing 2 and projects beyond the upper end of the valve casing as clearly shown drawings.

An arm I2 is pivotally connected as shown at It to a suitable bracket ll. The bracket I4 is shown in Fig. 1 of the drawings as supported at u in Flg. 1 and 3 or the irom the housing I! which houses the valve operating mechanism, but it is to be. understood that it may be mounted in any suitable place.

The bracket II also serves as a support for the' valve structure I, in the construction shown in the drawings, but this feature also is a detail which forms no part or the present invention.

The arm I2 extends between the arms ll of the forked rod [1 and is attached to the arms l6 by a suitable set-screw or pin l8. The rod H has its lower end connected to the outer siidable member lS'of the dashpot structure 2d. The dashpot structure 20 includes the outer slidable member l9 which fits snugly-over the core 2| in such manner as to create suction action between the member l9 and the core 2! to retard the upward movement of the rod I1 and consequently of the arm I2 under the action of the spring 22. The spring 22 is coiled about the rod I1 and has one end engaging against the forked end of the rod or against a washer 23 which in turn engages the forked endof the-rod while the other end of the spring is engaged by the cross-bar 24 of the cage or frame- 25. The cage or frame 25 is movable relativeto the rod Hand it has across-bar 26 at its upper end which is pivotally. connected as shown at 21 .to the core I 28 of the solenoid or electromagnet 29.

When the solenoid or electromagnet 29 is de energized, the core 28 is in its extended or lowered position, as shown in Fig. 2 of the drawings, at which time the arm l2 will be forced downwardly by the weight of the core 28, and the outer slidable cup l9 will also be moved intoits lowermost position. When the valve operating arm I2 is" in its lowered position it presses against the plunger 10, forcing the valve cone 4 off of the seat 3 and opening the valve.

When the electromagnet or solenoid 29 is energized, the core 28 is drawn up into the coil 3 0 of the solenoid or electromagnet. The movement of the core is rapid, and to provide means for preventing the rapid closing of the valve 4 and to provide a predetermined desired time interval between the energization of the solenoid and the closing of the valve, the dashpot structure 20 is provided.

As the solenoid core 28 moves upwardly it will compress the spring 22, and the expansion of the spring will move the lever l2 upwardly and also move the cup l9 upwardly. Owing .to the tight suction engagement between the cup I9 tion with the valve operating in a reverse manher to that described, without departing from the spirit or the present invention.

rod and engaging said cage to provide a yieldabie operative connection between the cage and said rod, and a pivoted valve operating arm having one end connected to said rod, said arm being moved to operating position by weight of said core upon de-energizing of said electromagnet, said dash pot structure acting to delay movement of the arm to said operating position after said cage has been moved by said spring into contact with said slidable member.

EDWARD M. PAULLIN, JR. 

